Forged high primary compression crankshaft with Yamaha con rod. The balancing was highly focused while the development took place. Thanks to the balancing weights combining Tungsten (100 gr. each side), copper weights and hidden pockets the crankshaft gives a very smooth engine run. The Yamaha con rod with 110 mm length gives an easier life to the big end bearing. The delivery of every crankshaft contains a 3 mm base spacer to equal the longer rod. The lubrication of the big end is by two sufficient slots. The open cage silver bearing leaves nothing to be desired. The diameter of the gudgeon pin is 22 mm. The delivery does contain: Crankshaft GP flywheel taper 58 mm stroke / 110 mm Yamaha con rod Base gasket small casings - 3 mm Base gasket large casings- 3 mm Small end bearing